ci: bump to Xcode 26.3 and fix CalendarWatcher.stop race#4

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Newarr merged 4 commits into

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ci/bump-to-xcode-26

May 11, 2026

Commits on May 11, 2026

ci: select Xcode 26.3 to satisfy mlx-audio-swift Swift 6.2 requirement
Szymon Sypniewicz
committed
calendar: await poll-task termination in CalendarWatcher.stop
Szymon Sypniewicz
committed
ci: fix stale project + scheme names in Build app step
Szymon Sypniewicz
committed
ci: move job to macos-26 runner for Xcode 26 asset toolchain
Szymon Sypniewicz
committed